<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title></title>
<style type="text/css">
#pl{text-decoration:underline;}
#p2{text-decoration:line-through;}
#p3{text-decoration:overline;}
</style>
</head>
<body>
<p id="p1">这是“下划线”效果</p>
<p id="p2">这是“删除线”效果</p>
<p id="p3">这是“顶划线”效果</p>
</body>
</html>